(Used) 2010 GM/Chev(HD), ENGINE ECM- Part Number: 12640466, Serial Number: 86AAUSK010666KV2, Displacement: 6.0L, Horsepower: 300, Type Plug: 3 Rectangular, Pin Plug: 1 Plug of 65 Pins, 1 Plug of 73 Pins, 1 Plug of 55 Pins, For more information about this item, give us a call. We ship worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921